mod.__info__(:struct) missing `:required` key in elixir 1.18-rc.0

[MrYawe]

Elixir and Erlang/OTP versions

Erlang/OTP 27 [erts-15.1.3] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit]

Elixir 1.18.0-rc.0 (66c5908) (compiled with Erlang/OTP 27)

Operating system

macOS 14.7 (23H124)

Current behavior

In elixir 1.18-rc.0:

iex> Goth.__info__(:struct)
[
  %{default: nil, field: :name},
  %{default: nil, field: :source},
  %{default: nil, field: :retry_delay},
  %{default: nil, field: :http_client},
  %{default: nil, field: :retry_after},
  %{default: nil, field: :refresh_before},
  %{default: 10, field: :max_retries},
  %{default: 0, field: :retries}
]

Expected behavior

In elixir 1.17:

iex> Goth.__info__(:struct)
[
  %{field: :name, required: false},
  %{field: :source, required: false},
  %{field: :retry_delay, required: false},
  %{field: :http_client, required: false},
  %{field: :retry_after, required: false},
  %{field: :refresh_before, required: false},
  %{field: :max_retries, required: false},
  %{field: :retries, required: false}
]

This is breaking the mimic library edgurgel/mimic#87

[josevalim]

mimic should be fixed. I believe the library is "mocking" Elixir internals and it will continue to break while it continues to mock the internals :) Thank you for the report!